CN104011342A - Engine device - Google Patents

Engine device Download PDF

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Publication number
CN104011342A
CN104011342A CN201280064924.7A CN201280064924A CN104011342A CN 104011342 A CN104011342 A CN 104011342A CN 201280064924 A CN201280064924 A CN 201280064924A CN 104011342 A CN104011342 A CN 104011342A
Authority
CN
China
Prior art keywords
mentioned
discharge manifold
exhaust
pipe
exhaust gas
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201280064924.7A
Other languages
Chinese (zh)
Other versions
CN104011342B (en
Inventor
光田匡孝
斋藤谦太
小野寺恭志
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yanmar Power Technology Co Ltd
Original Assignee
Yanmar Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2011286236A external-priority patent/JP5843608B2/en
Priority claimed from JP2012008948A external-priority patent/JP2013148009A/en
Application filed by Yanmar Co Ltd filed Critical Yanmar Co Ltd
Publication of CN104011342A publication Critical patent/CN104011342A/en
Application granted granted Critical
Publication of CN104011342B publication Critical patent/CN104011342B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1805—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K13/00—Arrangement in connection with combustion air intake or gas exhaust of propulsion units
    • B60K13/04—Arrangement in connection with combustion air intake or gas exhaust of propulsion units concerning exhaust
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/008—Mounting or arrangement of exhaust sensors in or on exhaust apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/08—Other arrangements or adaptations of exhaust conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/08—Other arrangements or adaptations of exhaust conduits
    • F01N13/082—Other arrangements or adaptations of exhaust conduits of tailpipe, e.g. with means for mixing air with exhaust for exhaust cooling, dilution or evacuation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/08—Other arrangements or adaptations of exhaust conduits
    • F01N13/10—Other arrangements or adaptations of exhaust conduits of exhaust manifolds
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/023—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
    • F01N3/0235—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using exhaust gas throttling means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/12—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems characterised by means for attaching parts of an EGR system to each other or to engine parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/52—Systems for actuating EGR valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/16—Silencing apparatus characterised by method of silencing by using movable parts
    • F01N1/18—Silencing apparatus characterised by method of silencing by using movable parts having rotary movement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
    • F01N2240/36—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being an exhaust flap
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2260/00—Exhaust treating devices having provisions not otherwise provided for
    • F01N2260/02—Exhaust treating devices having provisions not otherwise provided for for cooling the device
    • F01N2260/024—Exhaust treating devices having provisions not otherwise provided for for cooling the device using a liquid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2260/00—Exhaust treating devices having provisions not otherwise provided for
    • F01N2260/14—Exhaust treating devices having provisions not otherwise provided for for modifying or adapting flow area or back-pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2340/00—Dimensional characteristics of the exhaust system, e.g. length, diameter or volume of the apparatus; Spatial arrangements of exhaust apparatuses
    • F01N2340/02—Dimensional characteristics of the exhaust system, e.g. length, diameter or volume of the apparatus; Spatial arrangements of exhaust apparatuses characterised by the distance of the apparatus to the engine, or the distance between two exhaust treating apparatuses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2340/00—Dimensional characteristics of the exhaust system, e.g. length, diameter or volume of the apparatus; Spatial arrangements of exhaust apparatuses
    • F01N2340/04—Dimensional characteristics of the exhaust system, e.g. length, diameter or volume of the apparatus; Spatial arrangements of exhaust apparatuses characterised by the arrangement of an exhaust pipe, manifold or apparatus in relation to vehicle frame or particular vehicle parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
    • F01N2560/08—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being a pressure sensor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2590/00—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines
    • F01N2590/08—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines for heavy duty applications, e.g. trucks, buses, tractors, locomotives
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2590/00—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines
    • F01N2590/10—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines for stationary applications
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N9/00—Electrical control of exhaust gas treating apparatus
    • F01N9/002—Electrical control of exhaust gas treating apparatus of filter regeneration, e.g. detection of clogging
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/04—Arrangements of liquid pipes or hoses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P2060/00—Cooling circuits using auxiliaries
    • F01P2060/16—Outlet manifold
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/14—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the exhaust system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
    • F02M26/29—Constructional details of the coolers, e.g. pipes, plates, ribs, insulation or materials
    • F02M26/30—Connections of coolers to other devices, e.g. to valves, heaters, compressors or filters; Coolers characterised by their location on the engine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
    • F02M26/29—Constructional details of the coolers, e.g. pipes, plates, ribs, insulation or materials
    • F02M26/32—Liquid-cooled heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/45—Sensors specially adapted for EGR systems
    • F02M26/46—Sensors specially adapted for EGR systems for determining the characteristics of gases, e.g. composition
    • F02M26/47—Sensors specially adapted for EGR systems for determining the characteristics of gases, e.g. composition the characteristics being temperatures, pressures or flow rates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/52—Systems for actuating EGR valves
    • F02M26/53—Systems for actuating EGR valves using electric actuators, e.g. solenoids
    • F02M26/54—Rotary actuators, e.g. step motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/65—Constructional details of EGR valves
    • F02M26/70—Flap valves; Rotary valves; Sliding valves; Resilient valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/65—Constructional details of EGR valves
    • F02M26/72—Housings

Abstract

The invention provides an engine device which is configured so that a support structure for an exhaust gas throttle device (65) is highly rigid and so that exhaust gas pressure within the exhaust manifold (7) can be highly accurately adjusted. The engine device is provided with an engine (1) having the exhaust manifold (7) and adjusts exhaust gas pressure in the exhaust manifold (7) by the exhaust gas throttle device (65). The engine device is configured in such a manner that the exhaust gas inlet side of the throttle valve case (68) of the exhaust gas throttle device (65) is fastened to the exhaust gas outlet of the exhaust manifold (7), and that an exhaust pipe (72) is connected to the exhaust manifold (7) through the throttle valve case 68.

Description

Engine device
Technical field
The present invention, relate to the engine devices such as the diesel engine on farm machinery such as being mounted in the such as working truck such as sliding loader or backhoe or fork truck, tractor or combine-harvester, fixed generator or refrigerating machine etc., in more detail, relate to the engine device with discharge manifold.
Background technique
In the past, develop exhaust gas purifier (diesel particulate filter) has been set in the exhaust pathway of motor, by oxidation catalyst or the smoke filter etc. of exhaust gas purifier, the exhausting air of having discharged from diesel engine has been carried out the technology (for example, with reference to patent documentation 1) of purified treatment.
In the past, in the exhaust pathway of motor, exhaust restriction means was set, prevented that the temperature of the exhausting air of discharging to exhaust gas purifier from declining, maintained the purifying property of exhaust gas purifier.
In the past, developed EGR device had been set in the exhaust pathway of motor, the technology that exhausting air is discharged from diesel engine.
In the past, the cooler for recycled exhaust gas that EGR gas cooling is used is set in the exhaust pathway of motor, a part by exhausting air from motor to discharge manifold that made to discharge from refluxes to motor from intake manifold, reduces the discharge capacity of the NOx (nitrogen oxide) of motor.In addition, the exhaust restriction means of the exhausting air pressure that improves motor is set, improved the exhausting air of motor presses by exhaust restriction means, make the temperature rise of exhausting air of discharging from motor, the exhaust gas purifier (smoke filter etc.) that the particulate material (PM) having trapped from exhausting air is carried out to oxidation removal, guaranteed the temperature of required exhausting air.
Prior art document
Patent documentation
Patent documentation 1: TOHKEMY 2010-185340 communique
Summary of the invention
Invent problem to be solved
As patent documentation 1, even in the occasion that separates the assembling exhaust gas purifier of turning up the soil with respect to motor, also can maintain the temperature of the exhausting air of supplying with from motor to exhaust gas purifier, regeneration that prevents the smoke filter of exhaust gas purifier etc. becomes incomplete, but connecting in the structure of discharge manifold and throttling valve casing through relay pipe, the exhausting air that existence can not be dwindled exhaust restriction means is simply taken into the volume of side, and, connect the extension setting party of outlet pipe of exhaust gas purifier and exhaust restriction means to by problems such as special provisions.
In addition, as patent documentation 1, the structure of the export department of discharge manifold 71 will be arranged on for the exhaust restriction means that the exhaust pressure of motor is regulated, in the occasion that the back pressure transducer that the exhausting air pressure of that side of discharge manifold is detected is set, with exhaust pressure sensor tube connection discharge manifold and back pressure transducer, if but the pressure conveying end of discharge manifold and the distance of back pressure transducer are short, the connected element such as pliability rubber hose that connects back pressure transducer and exhaust pressure sensor tube is heated, existence can not improve the problems such as the durability of the connected elements such as pliability rubber hose.On the other hand, if the pressure conveying end of discharge manifold and the distance of back pressure transducer, the connected element such as exhaust pressure sensor tube or rubber hose easily vibrates, and existence can not be simplified the problems such as the vibration absorbing structure of the connected elements such as exhaust pressure sensor tube or rubber hose.
For solving the technological means of problem
Therefore, the object of the invention is to these present situations to inquire into, a kind of engine device improving of having implemented is provided.
In order to reach above-mentioned order, engine device of the present invention, possesses the motor that is provided with discharge manifold, by exhaust restriction means, the exhaust pressure of above-mentioned discharge manifold is regulated; In this engine device: be configured to, the exhausting air of fastening the throttling valve casing of above-mentioned exhaust restriction means at the exhaust outlet of above-mentioned discharge manifold is taken into side, through above-mentioned throttling valve casing, outlet pipe is connected with discharge manifold.
In above-mentioned engine device, also can fasten above-mentioned throttling valve casing at the upper face side of above-mentioned discharge manifold, upper face side at above-mentioned throttling valve casing is fastened relay pipe, above-mentioned throttling valve casing and relay pipe are by being configured to multilayer shape with respect to above-mentioned gas exhaust manifold, and the above-mentioned relay pipe of above-mentioned outlet pipe and portion of the superiors links.
In above-mentioned engine device, also can make the exhaust outlet upward opening of above-mentioned discharge manifold, at the upper face side of above-mentioned discharge manifold, above-mentioned throttling valve casing is set, upper face side at above-mentioned throttling valve casing forms throttle valve gas outlet, and, below above-mentioned throttling valve casing, dispose across above-mentioned discharge manifold the cooler for recycled exhaust gas that EGR gas cooling is used.
And, in this engine device, also can possess the exhaust pressure sensor tube of the back pressure transducer that the exhausting air pressure of above-mentioned that side of discharge manifold is detected and the hot transmission that above-mentioned back pressure transducer is connected with above-mentioned discharge manifold; This engine device is constituted as, on the water-cooling tube that cooling water is circulated to above-mentioned cooler for recycled exhaust gas and establish above-mentioned exhaust pressure sensor tube.
In above-mentioned engine device, also can be on above-mentioned discharge manifold fixed tube supporting bracket, above-mentioned water-cooling tube and exhaust pressure sensor tube are fixed on above-mentioned piping support bracket.
In above-mentioned engine device, also can on above-mentioned discharge manifold, form EGR gas take-off pipe, tiltedly below is outstanding from above-mentioned discharge manifold to its lateral direction to make EGR gas take-off pipe, the outstanding end of one sidepiece of above-mentioned cooler for recycled exhaust gas and above-mentioned EGR gas take-off pipe is linked, and, in the other side of above-mentioned cooler for recycled exhaust gas, pipe joint member is set, through above-mentioned pipe joint member, the other side of above-mentioned cooler for recycled exhaust gas and above-mentioned discharge manifold are linked, above-mentioned water-cooling tube extends and arranges at the upper side of the above-mentioned cooler for recycled exhaust gas of lateral direction of above-mentioned discharge manifold.
The effect of invention
According to the present invention, possessing the motor that is provided with discharge manifold, in the engine device exhaust pressure of above-mentioned discharge manifold being regulated by exhaust restriction means, at the exhaust outlet of above-mentioned discharge manifold, the exhausting air of fastening the throttling valve casing of above-mentioned exhaust restriction means is taken into side, forms in mode outlet pipe being connected with discharge manifold through above-mentioned throttling valve casing.So, one side can be in the above-mentioned exhaust restriction means of above-mentioned discharge manifold upper support of high rigidity, the supporting construction height of above-mentioned exhaust restriction means is formed rigidly, one side can with the volume that is for example connected the exhausting air of dwindling above-mentioned exhaust restriction means compared with the structure of above-mentioned throttling valve casing and above-mentioned discharge manifold and is taken into side through relay pipe, regulate accurately the exhaust pressure in above-mentioned discharge manifold.For example, the temperature of the exhausting air to supplies such as exhaust gas purifiers can be maintained in simply to the temperature of the purification that is suitable for exhausting air.
According to the present invention, fasten above-mentioned throttling valve casing at the upper face side of above-mentioned discharge manifold, upper face side at above-mentioned throttling valve casing is fastened relay pipe, and above-mentioned throttling valve casing and relay pipe are configured above-mentioned gas exhaust manifold by multilayer shape, and the above-mentioned relay pipe of above-mentioned outlet pipe and portion of the superiors is linked.So, do not change the supporting posture of above-mentioned exhaust restriction means, do not change the specification of above-mentioned relay pipe, just can be for example change accordingly the mounting position (link direction of above-mentioned outlet pipe) of above-mentioned relay pipe with mounting point of exhaust gas purifier etc. yet.
According to the present invention, the exhaust outlet upward opening of above-mentioned discharge manifold, at the upper face side of above-mentioned discharge manifold, above-mentioned throttling valve casing is set, upper face side at above-mentioned throttling valve casing forms throttle valve gas outlet, and, below above-mentioned throttling valve casing, the cooler for recycled exhaust gas of using across above-mentioned discharge manifold configuration EGR gas cooling.So, can one side, along a side of above-mentioned motor, above-mentioned discharge manifold, above-mentioned exhaust restriction means and above-mentioned cooler for recycled exhaust gas be set compactly, one side is for example extended above-mentioned outlet pipe is set towards side or upwards from the throttle valve gas outlet of above-mentioned throttling valve casing accordingly with the configuration of exhaust gas purifier etc.In addition, can utilize the outer side surface of above-mentioned discharge manifold, the cooling water pipe that supporting is connected with above-mentioned exhaust restriction means and above-mentioned cooler for recycled exhaust gas compactly.
According to the present invention, also possesses the back pressure transducer that the exhausting air pressure of above-mentioned that side of discharge manifold is detected, the exhaust pressure sensor tube of the hot transmission that above-mentioned back pressure transducer is connected with above-mentioned discharge manifold is set, with on the water-cooling tube cooling water is circulated to above-mentioned cooler for recycled exhaust gas and the mode of establishing above-mentioned exhaust pressure sensor tube form, so, by above-mentioned water-cooling tube and above-mentioned exhaust pressure sensor tube and establish, one side can suppress the temperature rise of the above-mentioned exhaust pressure sensor tube being heated by exhausting air, improve the durability of the connected elements such as pliability rubber hose, one side can closely configure back pressure transducer with the pressure conveying end of discharge manifold, above-mentioned exhaust pressure sensor tube is formed as to short size, simplify the vibration absorbing structure of above-mentioned exhaust pressure sensor tube or above-mentioned connected element.
According to the present invention, fixed tube supporting bracket on above-mentioned discharge manifold, is fixed on above-mentioned water-cooling tube and exhaust pressure sensor tube on above-mentioned piping support bracket.So, one side can be assembled in above-mentioned motor as single part using above-mentioned water-cooling tube, exhaust pressure sensor tube and above-mentioned piping support bracket, one side can firmly fix above-mentioned water-cooling tube and exhaust pressure sensor tube through above-mentioned piping support bracket on the above-mentioned discharge manifold of high rigidity, can simplify the vibration absorbing structure of above-mentioned water-cooling tube and exhaust pressure sensor tube.
According to the present invention, on above-mentioned discharge manifold, form EGR gas take-off pipe, from above-mentioned discharge manifold to its lateral direction, tiltedly below makes EGR gas take-off pipe outstanding, the outstanding end of one sidepiece of above-mentioned cooler for recycled exhaust gas and above-mentioned EGR gas take-off pipe is linked, and, in the other side of above-mentioned cooler for recycled exhaust gas, pipe joint member is set, through above-mentioned pipe joint member, the other side of above-mentioned cooler for recycled exhaust gas and above-mentioned discharge manifold are linked, extend above-mentioned water-cooling tube is set at the upper side of the above-mentioned cooler for recycled exhaust gas of lateral direction of above-mentioned discharge manifold.So, one side can be cut down with respect to the side of above-mentioned motor and be left the support number of packages that supports above-mentioned cooler for recycled exhaust gas, can reduce manufacture cost, one side can closely be extended above-mentioned water-cooling tube is set with the pressure conveying end of above-mentioned discharge manifold (mounting point of exhaust pressure sensor tube).For example can support above-mentioned water-cooling tube or exhaust pressure sensor tube in the position of interior side's side compared with the outer side surface of above-mentioned cooler for recycled exhaust gas.Above-mentioned water-cooling tube or exhaust pressure sensor tube can not given prominence to from motor side a lot.Can make above-mentioned water-cooling tube or exhaust pressure sensor tube and motor side approach, arrange compactly.
Brief description of the drawings
Fig. 1 is the stereogram that represents the diesel engine of the 1st mode of execution.
Fig. 2 is the front elevation of diesel engine.
Fig. 3 is the rear view of diesel engine.
Fig. 4 is the right side view of diesel engine.
Fig. 5 is the left side view of diesel engine.
Fig. 6 is the plan view of diesel engine.
Fig. 7 is the stereogram of watching from diesel engine left side.
Fig. 8 is the stereogram of watching from the left side of discharge manifold portion.
Fig. 9 is the stereogram of watching from the upside of discharge manifold portion.
Figure 10 is the stereogram of cooling water pipe.
Figure 11 is the stereoscopic figure of exhaust gas purifier.
Figure 12 is the exploded perspective view of exhaust restriction means.
Figure 13 is the longitudinal section of exhaust restriction means.
Figure 14 is the sectional elevation of exhaust restriction means.
Embodiment
With reference to Fig. 1～Figure 14, the mode of execution of engine device of the present invention is described with reference to the accompanying drawings below.In the diesel engine 1 being mounted in as prime mover on building machinery or building machinery or farm machinery or charging crane etc., possesses the exhaust gas purifier 2 (diesel particulate filter) of continuous regenerative.Utilize exhaust gas purifier 2, the removal of the particulate material (PM) in the exhausting air of diesel engine 1, can also reduce carbon monoxide (CO), hydrocarbon (HC) in the exhausting air of diesel engine 1.
Diesel engine 1, possesses interior mounted engine and exports the cylinder block 4 with bent axle 3 and piston (diagram is omitted).In cylinder block 4, load cylinder head 5.In the right flank configuration intake manifold 6 of cylinder head 5.At the left surface configuration discharge manifold 7 of cylinder head 5.At the upper side configuration cylinder front cover 8 of cylinder head 5.At the leading flank of cylinder block 4, cooling fan 9 is set.At the trailing flank of cylinder block 4, flywheel casing 10 is set.At the interior configuration flywheel 11 of flywheel casing 10.
Prop up flywheel 11 at the upper pivot of bent axle 3 (engine output shaft).Form in the mode of taking out the power of diesel engine 1 to the working part of working truck (backhoe, fork truck etc.) through bent axle 3.In addition, below cylinder block 4, configure food tray 12.Lubricant oil in food tray 12, is configured at the oil purifier 13 of the side of cylinder block 4 and supplies with to the each lubricated portion of diesel engine 1.
Above the oil purifier 13 of the side of cylinder block 4 (below of intake manifold 6), the fuel feed pump 14 for feed fuels is installed.Each sparger 15 that 4 cylinders of the Fuelinjection nozzle (diagram omit) with electromagnetism open and close controlling type are used is set in diesel engine 1.Each sparger 15, through fuel feed pump 14 and rail 16 and fuel filter 17 altogether cylindraceous, is connected with the fuel tank (diagram is omitted) being mounted on working truck.
The fuel of above-mentioned fuel tank is through fuel filter 17 from fuel feed pump 14 to common rail 16 force feeds, and the fuel of high pressure is stored in common rail 16.By respectively the Fuelinjection nozzle of each sparger 15 being carried out to open and close controlling, the each cylinder injection of the fuel of the high pressure in rail 16 from each sparger 15 to diesel engine 1 altogether.
At the position keeping left above of cylinder block 4, the cooling waterpump 21 that cooling water lubrication is used is to configure with the coaxial shape of fan axle of cooling fan 9.By the rotation of bent axle 3, drive with vee-belt 22 through cooling fan, cooling waterpump 21 is driven together with cooling fan 9.Be mounted in the cooling water in the radiator (diagram is omitted) on working truck, by the driving of cooling waterpump 21, supplied with to cooling waterpump 21.Then, cooling water is supplied with to cylinder block 4 and cylinder head 5, carries out cooling to diesel engine 1.In addition, be provided with alternator 23 in the left side side of cooling waterpump 21.
Be respectively equipped with motor under-chassis assembly department 24 in the left and right side of cylinder block 4.At each motor under-chassis assembly department 24, fasten the motor under-chassis body (diagram is omitted) with vibration-proof rubber with bolt respectively.Diesel engine 1, is bearing on working truck (motor of backhoe, fork truck etc. is installed underframe) through the vibrationproof of above-mentioned each motor under-chassis body.
Further illustrate EGR device 26 (exhaust gas recirculation device).The entrance part of the intake manifold 6 projecting upwards, links through EGR device 26 (exhaust gas recirculation device) and air-strainer (diagram is omitted).New gas (outside air) is sent to intake manifold 6 from above-mentioned air-strainer through EGR device 26.
EGR device 26, possesses EGR body shell 27 (trap), inlet flap member 28, recirculation exhausting air pipe 30 and EGR valve member 31.EGR body shell 27 (trap), makes a part (from the EGR gas of discharge manifold) for the exhausting air of diesel engine mix with new gas (from the outside air of air-strainer), supplies with to intake manifold 6.Inlet flap member 28, makes above-mentioned air-strainer be communicated with EGR body shell 27.Recirculation exhausting air pipe 30, as the return line being connected with discharge manifold 7 through cooler for recycled exhaust gas 29.EGR valve member 31, makes recirculation exhausting air pipe 30 be communicated with EGR body shell 27.
, intake manifold 6 is connected through EGR body shell 27 with the inlet flap member 28 that new conductance enters use.And EGR body shell 27 is communicated with the outlet side of the recirculation exhausting air pipe 30 extending from discharge manifold 7.EGR body shell 27 is formed long tubular.Inlet flap member 28, is fastened the end at the length direction of EGR body shell 27 with bolt.The downward open end of EGR body shell 27, is used bolt can install and remove ground and is fastened with the entrance part of intake manifold 6.
In addition, the outlet side of recirculation exhausting air pipe 30, links through EGR valve member 31 and EGR body shell 27.The inlet side of recirculation exhausting air pipe 30, below cooler for recycled exhaust gas 29 and discharge manifold 7, side links.Aperture by the EGR valve in EGR valve member 31 (diagram is omitted) regulates, and the delivery volume of the EGR gas of subtend EGR body shell 27 regulates.
According to above-mentioned formation, from above-mentioned air-strainer through inlet flap member 28 to the new gas of the interior supply of EGR body shell 27 (outside air), on the other hand, from discharge manifold 7 through EGR valve member 31 to the interior supply of EGR body shell 27 EGR gas (part for the exhausting air of discharging from discharge manifold).From the new gas of above-mentioned air-strainer and EGR gas from discharge manifold 7 EGR body shell 27 is interior mix after, the mixed gas in EGR body shell 27 is supplied with to intake manifold 6.; a part for the exhausting air of having discharged from diesel engine 1 to discharge manifold 7, because reflux to diesel engine 1 from intake manifold 6, so; maximum combustion temperature when high loaded process declines, and reduces from the discharge capacity of the NOx (nitrogen oxide) of diesel engine 1.
Next, with reference to Fig. 1 and Figure 11, exhaust gas purifier 2 is described.Exhaust gas purifier 2, possesses exhausting air purifying box 38, and exhausting air purifying box 38 has the inlet duct 36 of purification and purge outlet pipe 37.In the inside of exhausting air purifying box 38, the movement direction (from the downside of Fig. 1 to upside) of exhausting air in upright arrangement arrange and generate nitrogen dioxide (NO 2) the diesel oxidation catalyst 39 (gas purification body) such as platinum and at lower temperature continuously by the smoke filter 40 (gas purification body) of the ojosa of particulate material (PM) oxidation removal having trapped.In addition, formed a sidepiece of exhausting air purifying box 38 by baffler 41, purge outlet pipe 37 is set on baffler 41.
According to above-mentioned formation, the nitrogen dioxide (NO having been generated by the oxidation of diesel oxidation catalyst 39 2), by from a side end face (being taken into side end face) to the interior supply of smoke filter 40.Be included in the particulate material (PM) in the exhausting air of diesel engine 1, trapped by smoke filter 40, by nitrogen dioxide (NO 2) oxidation removal continuously.The removal of the particulate matter (PM) in the exhausting air of diesel engine 1, the carbon monoxide (CO) in the exhausting air of diesel engine 1, the amount of hydrocarbon (HC) are also reduced.
In addition, the upstream side gas temperature sensor 42 of thermistor-type and downstream side gas temperature sensor 43, be attached on exhausting air purifying box 38.The temperature of exhaust gas that the gas of diesel oxidation catalyst 39 flows into side end face is detected by upstream side gas temperature sensor 42.The gas of diesel oxidation catalyst flows out the temperature of exhaust gas of side end face, is detected by downstream side gas temperature sensor 43.
And, on exhausting air purifying box 38, set up the differential pressure transducer 44 as exhausting air pressure transducer.The pressure difference of the exhausting air between upstream side and the downstream side of smoke filter 40, is detected by differential pressure transducer 44.Poor according to the exhaust pressure between the upstream side of smoke filter 40 and downstream side, the accumulating amount of the particulate material in computing smoke filter 40, forms in the mode that can hold the blocked state in smoke filter 40.
As shown in Figure 1, shown in Figure 11, on the outlet clamped flanges 45 of exhausting air purifying box 38, fasten sensor bracket 46 with bolt, at the exterior side sensors configured bracket 46 of exhausting air purifying box 38.The differential pressure transducer 44 that is provided with integratedly electric wiring connector is installed on sensor bracket 46.At the outer side surface configuration differential pressure transducer 44 of exhausting air purifying box 38.One of upstream side sensor pipe arrangement 47 and downstream side sensor pipe arrangement 48 is distolaterally connected with differential pressure transducer 44 respectively.Mode between each sensor pipe arrangement boss body 49,50 with the smoke filter 40 in exhausting air purifying box 38 in upstream side and downstream side configures each sensor pipe arrangement boss body 49,50 in upstream side and downstream side on exhausting air purifying box 38.Another of upstream side sensor pipe arrangement 47 and downstream side sensor pipe arrangement 48 is distolateral, is connected respectively with each sensor pipe arrangement boss body 49,50.
According to above-mentioned formation, poor (differential pressure of exhausting air) of the exhausting air pressure of the exhausting air pressure of the inflow side of smoke filter 40 and the outflow side of smoke filter 40, is detected through differential pressure transducer 44.Because the residual quantity of particulate material and the differential pressure of exhausting air in the exhausting air having been trapped by smoke filter 40 are proportional, so, increase regulation when above when remaining in the amount of the particulate material in smoke filter 40, according to the testing result of differential pressure transducer 44, implement the Regeneration control (control that for example makes delivery temperature increase) that the granular substance quality of smoke filter 40 is reduced.In addition, when the residual quantity of particulate material has further been increased to the possible scope of Regeneration control when above, exhausting air purifying box 38 is installed and removed to decomposition, cleaning smoke filter 40, removes the upkeep operation of particulate material artificially.
In addition, in the outer shell portion of differential pressure transducer 44, electric wiring connector 51 is set integratedly, and, the electric wiring connector 53 of the electric wiring connector 52 of upstream side gas temperature sensor 42 and downstream side gas temperature sensor 43 is fixed on sensor bracket 46.Because so that each connecting direction of the electric wiring connector 52 of the electric wiring connector 51 of differential pressure transducer 44, upstream side gas temperature sensor 42 and the electric wiring connector 53 of downstream side gas temperature sensor 43 is towards unidirectional posture, above-mentioned each connector 51,52,53 is supported, so, can improve the connection workability of each connector 51,52,53.
In addition, on the outlet clamped flanges 45 of exhausting air purifying box 38, form suspension body 55, and, on the side of exhausting air inlet side that is provided with the exhausting air purifying box 38 that purifies inlet duct 36, fasten hanging metal part 56 with bolt.In the diagonal of exhausting air purifying box 38, make suspension body 55 and hanging metal part 56 leave configuration.In the mounting shop of diesel engine 1 etc., at the upper engaging suspension body 55 of hook (diagram is omitted) and the hanging metal part 56 of chain block etc., by chain block etc., exhausting air purifying box 38 is carried out to hanger bearing, in diesel engine 1, assemble exhausting air purifying box 38.Utilize the configuration of the diagonal of suspension body 55 and hanging metal part 56, can hang the exhausting air purifying box 38 as weight thing using the posture of having stablized.
Next, as Fig. 1, Fig. 8～as shown in Figure 10, form EGR gas take-off pipe 61 on discharge manifold 7.In addition, on discharge manifold 7, fasten pipe joint member 62 with bolt.By supported the EGR gas access portion of cooler for recycled exhaust gas 29 by EGR gas take-off pipe 61, and, by the pipe joint member 62 that connects recirculation exhausting air pipe 30, the EGR gas outlet portion of cooler for recycled exhaust gas 29 is supported, cooler for recycled exhaust gas 29 leaves configuration from cylinder block 4 (specifically left surface).
On the other hand, as Fig. 1, Fig. 8, Figure 12～as shown in Figure 14, possess the exhaust restriction means 65 of the exhaust pressure that improves diesel engine 1.Make the exhaust outlet body 7a upward opening of discharge manifold 7.The exhaust outlet body 7a of discharge manifold 7, through the exhaust restriction means 65 for the exhaust pressure of diesel engine 1 is regulated, can install and remove ground and link with the relay pipe 66 of bending-like.Exhaust restriction means 65, the water jacket 70 that there is the throttling valve casing 68 of in-built exhaust shutter 67, exhaust shutter 67 is started actuator's shell 69 of control and actuator's shell 69 and throttling valve casing 68 are linked.
On exhaust outlet body 7a, load throttle valve shell 68, on throttling valve casing 68, load relay pipe 66, on exhaust outlet body 7a, fasten relay pipe 66 through throttling valve casing 68 by 4 bolts 71.Side below fixed restriction valve casing 68 on exhaust outlet body 7a.The 66a of side opening portion below the upper face side fixed relay pipe 66 of throttling valve casing 68.Link through outlet pipe 72 66b of transverse opening portion that purifies inlet duct 36 and relay pipe 66.Therefore, above-mentioned exhaust gas purifier 2 is connected with discharge manifold 7 through relay pipe 66 and exhaust restriction means 65.From the export department of discharge manifold 7 through purifying inlet duct 36 to the interior exhausting air having moved of exhaust gas purifier 2, after being purified by exhaust gas purifier 2, from purge outlet pipe 37 to tailpipe, (diagram is omitted) is mobile, finally outside machine, discharges.
According to above-mentioned formation, by according to the actuator of the pressure official post exhaust restriction means 65 being detected by above-mentioned differential pressure transducer 44 (diagram is omitted) work, implement the Regeneration control of smoke filter 40.; in the time that flue dust (black smoke) has been piled up on smoke filter 40; utilize the control that the exhaust shutter 67 of exhaust restriction means 65 is closed; improve the exhaust pressure of diesel engine 1; make the temperature of exhaust gas of discharging from diesel engine 1 rise to high temperature, flue dust (black smoke) burning that has made to pile up on smoke filter 40.Its result, flue dust disappears, and smoke filter 40 is regenerated.
In addition, the operation (operation that flue dust is easily piled up) of the easy step-down of temperature of, exhausting air little even if proceed to load, also can utilize the pressure rising of the exhaust pressure being produced by exhaust restriction means 65 to regenerate to smoke filter 40, can suitably maintain the exhausting air purifying ability of exhaust gas purifier 2.In addition, the burner burning for the flue dust that makes to be deposited on smoke filter 40 etc. also becomes and does not need.In addition, in the time that motor 1 starts, also can improve the exhaust pressure of diesel engine 1 by the control that utilizes exhaust restriction means 65, making becomes high temperature from the temperature of the exhausting air of diesel engine 1, promotes the warming-up of diesel engine 1.
As shown in Fig. 1, Fig. 8, Figure 12～Figure 14, possessing in the engine device that is provided with the motor 1 of discharge manifold 7, by exhaust restriction means 65, the exhaust pressure of discharge manifold 7 is regulated, the exhausting air of fastening the throttling valve casing 68 of exhaust restriction means 65 at the exhaust outlet of discharge manifold 7 is taken into side, discharge manifold 7 is formed with the mode that outlet pipe 72 is connected through throttling valve casing 68.Therefore, one side can be in the above-mentioned discharge manifold of high rigidity 7 upper support exhaust restriction means 65, the supporting construction of exhaust restriction means 65 can be configured to high rigidity, one side can with the volume of through relay pipe 66, the structure that for example discharge manifold 7 is connected with throttling valve casing 68 being compared the exhausting air of dwindling exhaust restriction means 65 and is taken into side, regulate accurately the exhaust pressure in discharge manifold 7.For example, the temperature of the exhausting air to supplies such as exhaust gas purifiers 2 can be maintained simply to the temperature of the purification that is suitable for exhausting air.
As shown in Fig. 8, Figure 12～Figure 14, fasten throttling valve casing 68 at the upper face side of discharge manifold 7, fasten relay pipe 66 at the upper face side of throttling valve casing 68, throttling valve casing 68 and relay pipe 66 are configured discharge manifold 7 by multilayer shape, relay pipe 66 and the outlet pipe 72 of portion of the superiors link.Therefore, do not change the supporting posture of exhaust restriction means 65, do not change the specification of relay pipe 66 yet, just can change accordingly with the mounting point of such as exhaust gas purifier 2 etc. the mounting position (link direction of outlet pipe 72) of relay pipe 66.
As shown in Fig. 1, Fig. 8, Figure 12～Figure 14, the exhaust outlet upward opening of discharge manifold 7, at the upper face side of discharge manifold 7, throttling valve casing 68 is set, form throttle valve gas outlet 68a at the upper face side of throttling valve casing 68, and the mode between the cooler for recycled exhaust gas 29 of using in throttling valve casing 68 and EGR gas cooling with discharge manifold 7 below throttling valve casing 68 configures the cooler for recycled exhaust gas 29 that EGR gas cooling is used.Therefore, one side can arrange discharge manifold 7, exhaust restriction means 65 and cooler for recycled exhaust gas 29 compactly along a side of motor 1, and one side can be extended outlet pipe 72 is set towards side or upwards from the throttle valve gas outlet 68a of throttling valve casing 68 accordingly with the configuration of such as exhaust gas purifier 2 etc.Therefore, can inside and outside the engine compartment of working truck, (component parts beyond diesel engine 1) functionally support exhaust gas purifier 2.In addition, can utilize the outer side surface of discharge manifold 7, the cooling water pipe (throttling outlet side flexible pipe 77, throttling inlet side flexible pipe 78 etc.) that supporting is connected with exhaust restriction means 65 and cooler for recycled exhaust gas 29 compactly.
On the other hand, in the left side side of diesel engine 1 (discharge manifold 7 those sides), the cooling water flow path (pliability cooling water returns to flexible pipe 75, throttling outlet side flexible pipe 77, throttling inlet side flexible pipe 78, cooling water taking-up flexible pipe 79 etc.) that connects cooler for recycled exhaust gas 29 and exhaust restriction means 65 and cooling waterpump 21 is set.Since not only supply with to the water-cooled portion of diesel engine 1 from the cooling water of cooling waterpump 21, and the mode that its part is sent to cooler for recycled exhaust gas 29 and exhaust restriction means 65 forms.
Above-mentioned distolateral a connection of returning to flexible pipe 75 and alloy intervalve 76 processed, another distolateral connection distolateral and pliability throttling outlet side flexible pipe 77 of alloy intervalve 76 processed.Another distolateral connection of the water jacket 70 of exhaust restriction means 65 and throttling outlet side flexible pipe 77, and, one distolateral connection of water jacket 70 and throttling inlet side flexible pipe 78, another distolateral connection of the cooling water drainage mouth of a river of cooler for recycled exhaust gas 29 and throttling inlet side flexible pipe 78.In addition, the cooling water of cooler for recycled exhaust gas 29 is taken into mouthful and takes out flexible pipe 79 through cooling water and be connected with cylinder block 4.
, cooling waterpump 21 and cooler for recycled exhaust gas 29 and exhaust restriction means 65 are connected in upright arrangemently.And, in the cooling water flow path being formed by above-mentioned each flexible pipe 75,77,78,79 etc., between cooling waterpump 21 and cooler for recycled exhaust gas 29, configuring exhaust restriction means 65, exhaust restriction means 65 is positioned at the upstream side of cooler for recycled exhaust gas 29.From a part for the cooling water of cooling waterpump 21, supply with to exhaust restriction means 65 through cooler for recycled exhaust gas 29 from cylinder block 4, circulate.
As shown in Fig. 1, Fig. 3, Fig. 8～Figure 10, possessing intake manifold 6 and discharge manifold 7, the EGR gas refluxing to intake manifold 6 from discharge manifold 7 is carried out to cooling cooler for recycled exhaust gas 29 and the engine device of back pressure transducer 84 that the exhausting air pressure of discharge manifold 7 those sides is detected, the exhaust pressure sensor tube 85 of the hot transmission that back pressure transducer 84 is connected with discharge manifold 7 is set, on the intervalve 76 of the water-cooling tube as cooling water is circulated to cooler for recycled exhaust gas 29 and the mode of establishing exhaust pressure sensor tube 85 form.Therefore, by water-cooling tube 76 and exhaust pressure sensor tube 85 and establish, one side can suppress the temperature rise of the above-mentioned exhaust pressure sensor tube 85 being heated by exhausting air, can improve the durability of the connected elements (exhaust pressure flexible pipe 86) such as pliability rubber hose, one side can make back pressure transducer 84 and the pressure conveying end 83 of discharge manifold 7 closely configure, exhaust pressure sensor tube 85 can be formed as to short size, can simplify the vibration absorbing structure of exhaust pressure sensor tube 85 or above-mentioned connected element.
As shown in Fig. 8～Figure 10, fixed tube supporting bracket 87 on discharge manifold 7 is fixed intervalve 76 and exhaust pressure sensor tube 85 on piping support bracket 87.Therefore, one side can be assembled in diesel engine 1 intervalve 76, exhaust pressure sensor tube 85 and piping support bracket 87 as single part, one side can firmly fix intervalve 76 and exhaust pressure sensor tube 85 through piping support bracket 87 on the discharge manifold of high rigidity 7, can simplify the vibration absorbing structure of intervalve 76 and exhaust pressure sensor tube 85.
As Fig. 1, Fig. 3, shown in Fig. 8～Figure 10, on above-mentioned discharge manifold 7, form EGR gas take-off pipe 61, from above-mentioned discharge manifold 7 to its lateral direction, tiltedly below makes EGR gas take-off pipe 61 outstanding, one sidepiece of the outstanding end of above-mentioned EGR gas take-off pipe 61 and above-mentioned cooler for recycled exhaust gas 29 links, and, in the other side of above-mentioned cooler for recycled exhaust gas 29, pipe joint member 62 is set, the other side of above-mentioned cooler for recycled exhaust gas 29 links with above-mentioned discharge manifold 7 through above-mentioned pipe joint member 62, in the outer side of above-mentioned discharge manifold 7, extend intervalve 76 is set to the upper side of above-mentioned cooler for recycled exhaust gas 29.Therefore, one side can be cut down with respect to the side of diesel engine 1 and be left the support number of packages that supports above-mentioned cooler for recycled exhaust gas 29, can reduce manufacture cost, one side can closely be extended intervalve 76 is set with the pressure conveying end 83 of above-mentioned discharge manifold 7 (mounting point of exhaust pressure sensor tube 85).For example can be at the supporting intervalve 76 of the position in interior side's side or exhaust pressure sensor tube 85 compared with the outer side surface of above-mentioned cooler for recycled exhaust gas 29.Intervalve 76 or exhaust pressure sensor tube 85 can not given prominence to a lot from diesel engine 1 side.Can make intervalve 76 or exhaust pressure sensor tube 85 and diesel engine 1 side approach, arrange compactly.
Description of reference numerals:
1 diesel engine
6 intake manifold
7 discharge manifolds
29 coolers for recycled exhaust gas
61 EGR gas take-off pipes
62 pipe joint members
65 exhaust restriction means
66 relay pipe
68 throttling valve casings
76 intervalves (water-cooling tube)
84 back pressure transducers
85 exhaust pressure sensor tubes
87 piping support brackets

Claims (6)

1. an engine device, possesses the motor that is provided with discharge manifold, by exhaust restriction means, the exhaust pressure of above-mentioned discharge manifold is regulated; This engine device is characterised in that:
Be configured to, the exhausting air of fastening the throttling valve casing of above-mentioned exhaust restriction means at the exhaust outlet of above-mentioned discharge manifold is taken into side, through above-mentioned throttling valve casing, outlet pipe is connected with discharge manifold.
2. engine device according to claim 1, it is characterized in that: fasten above-mentioned throttling valve casing at the upper face side of above-mentioned discharge manifold, upper face side at above-mentioned throttling valve casing is fastened relay pipe, above-mentioned throttling valve casing and relay pipe are configured to multilayer shape with respect to above-mentioned gas exhaust manifold, and the above-mentioned relay pipe of above-mentioned outlet pipe and portion of the superiors links.
3. engine device according to claim 1, it is characterized in that: the exhaust outlet upward opening of above-mentioned discharge manifold, at the upper face side of above-mentioned discharge manifold, above-mentioned throttling valve casing is set, upper face side at above-mentioned throttling valve casing forms throttle valve gas outlet, and, below above-mentioned throttling valve casing, across above-mentioned discharge manifold, dispose the cooler for recycled exhaust gas that EGR gas cooling is used.
4. engine device according to claim 3, is characterized in that: possess the back pressure transducer that the exhausting air pressure of above-mentioned that side of discharge manifold is detected, and
The exhaust pressure sensor tube of the hot transmission that above-mentioned back pressure transducer is connected with above-mentioned discharge manifold;
This engine device is constituted as, on the water-cooling tube that cooling water is circulated to above-mentioned cooler for recycled exhaust gas and establish above-mentioned exhaust pressure sensor tube.
5. engine device according to claim 4, is characterized in that: fixed tube supporting bracket on above-mentioned discharge manifold, above-mentioned water-cooling tube and exhaust pressure sensor tube are fixed on above-mentioned piping support bracket.
6. engine device according to claim 4, it is characterized in that: on above-mentioned discharge manifold, form EGR gas take-off pipe, tiltedly below is outstanding from above-mentioned discharge manifold to its lateral direction to make EGR gas take-off pipe, the outstanding end of one sidepiece of above-mentioned cooler for recycled exhaust gas and above-mentioned EGR gas take-off pipe links, and, in the other side of above-mentioned cooler for recycled exhaust gas, pipe joint member is set, through above-mentioned pipe joint member, the other side of above-mentioned cooler for recycled exhaust gas and above-mentioned discharge manifold are linked, above-mentioned water-cooling tube is stated cooler for recycled exhaust gas upward upper side in the outer side of above-mentioned discharge manifold extends setting.
CN201280064924.7A 2011-12-27 2012-12-26 Engine device Expired - Fee Related CN104011342B (en)

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